<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="UTF-8" />
		<meta http-equiv="X-UA-Compatible" content="IE=edge" />
		<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" />
		<title>Title</title>
	</head>
	<body>
		<script type="text/javascript">
			class Person {
				constructor(name, age) {
					this.name = name;
					this.age = age;
				}
				study() {
					// study方法放在了哪里？---类的原型对象上，供实例使用
					// 通过Person实例调用study时，study中的this就是Person实例
					console.log(this);
				}
			}
			const p1 = new Person("tom", 18);
			p1.study(); //通过实例调用study方法
			const x = p1.study;
			x();
		</script>
	</body>
</html>
